I would immediately reduce this by div. every term by -2:
x^2 + 8x + 22 = 0
Next, I'd "complete the square:"
x^2 + 8x + (4)^2 - (4)^2 + 22 = 0
(x + 4)^2 - 16 + 22 = 0, so that (x+4)^2 + 4 = 0.
Then sqrt( (x+4)^2 = sqrt(-4)
x+4 = plus or minus i*2
x = -4 plus or minus i*2 (answer)
Answer:
c=13
Step-by-step explanation:
5^2+12^2=c^2
25+144=c^2
169=c^2
c=sqrt(169)
c=13
Answer:
the domain is -11,10 but i didnt know if you wanted that or not
Step-by-step explanation:
